[Three rain valve to recommend the star product - Mechanical seal] Description: Choose seals in the purchase of repair of seals, most users will by size and color of the sample to buy H75N-53 mechanical seal, which will only increase difficulty sourcing, and may not be able to select the right product. The following procedures are recommended to improve the accuracy of purchase seals: 1. the direction of motion - first decide the direction of movement of the location where the seals, such as reciprocating, rotary, screw or fixed. 2. Seal the focus - such as deciding active point is sealed inside diameter rod or piston seal active point is the outer diameter and so on. 3. Temperature rating - from factory machinery for use by inspection or assessment of the actual working environment temperature mechanical seal, decided to use the materials needed. Instructions relating to temperature class production users can refer to the following considerations. [Three rain valve to recommend the star product - Mechanical seal] Introduction: Rubber O-ring: a cross-sectional shape is a perfect circle, there is a certain self-tightening effect, seal better than flat washers, clamping force is smaller. Plastic flat washers: most plastics are good corrosion resistance, good heat resistance most plastics. PTFE plastic crown H75N-43 machine closures, not only excellent corrosion resistance, and relatively wide temperature range, long-term use in the -180 ℃ ~ + 200 ℃ of. PTFE gasket package: In order to give full play to the advantages of PTFE seal H75N-55 aircraft, but to make up for the shortcomings of its less flexible, made of rubber or Teflon wrapped asbestos rubber gasket. In this way, both with the same corrosion-resistant PTFE flat washers, and good flexibility, enhanced sealing effect, reducing the clamping force. H75N-48 mechanical seal, mechanical seal manufacturers selected three rain (certified), Guizhou mechanical seal is provided by three rain Valve Co., Ltd. of Tianjin. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) is a leader in Tianjin, seals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In three rain valve leadership with the staff warmly welcome all inquiries negotiations to create three rain valve a better future.